SUMMARY:

Over 25 years of’ experience as a system administrator/mainframe system programmer/analyst. This includes installation, configuration, troubleshooting, tuning and securing mainframe systems as well as Linux and Windows systems and SNA and IP network environments. I also have experience in handling major incidents affecting large enterprise applications and environments.

TECHNOLOGY:

Operating Systems: MVS/XA, MVS/ESA, OS/390, z/OS, z/VM, Red Hat Linux, Windows 2008 & 2012

OS/390 & zOS Subsystems: JES2, DFHSM, ISPF/TSO, JCL, SMF, RMF, SDSF, VPS, PSF, InfoPrint, Syncsort

Hardware: Cisco 7204, 6509, Content Service Switch (CSS), IBM 3745, 3746, OSA Express Gb

PROFESSIONAL EXPERIENCE:

Confidential

System Engineer

Responsibilities:

• Lead mainframe network system programmer and backup z/OS system programmer as well as lead technical engineer on multiple commercially available off - the-shelf software (COTS) enterprise systems including the AirWatch Enterprise Mobility Management Platform (EMM).
• Responsible for the configuration, analysis, troubleshooting and tuning of a multi-LPAR zOS environment, including a remote DR environment with primary responsibility for the mainframe network components. This included being responsible for planning and configuration of the mainframes and mainframe disk and tape systems in a new primary datacenter and DR datacenter including the I/O systems/connectivity and network connectivity.
• Lead technical engineer on the AirWatch Enterprise Mobility Management Platform (EMM).
• Lead server administrator for multiple Windows and Linux environments running various COTS applications.
• Using technical and project management skills, I have been the technical lead on various projects including the re-engineering of legacy SNA connections and AirWatch EMM and participated in various enterprise wide software evaluations, procurements, and implementations.
• Solelyresponsible for the customization of zOS Communication Server and its components (VTAM, IP, TN3270, FTP, Resolver, SMTP, SNMP and hipersockets).
• Troubleshoot network related problems using a customized VTAM SPO interface,as well as using GTF and packet traces, netstat commands, and IPCS dump/trace analysis. Built MXG/SAS reports on network activity
• Responsible for installing (SMP/E and non SMP/E), upgrading, maintaining, and troubleshooting various mainframe products including: Connect:Direct, Cyberfusion, Syncsort, VPS, PSF, Infoprint server..
• Implemented AT-TLS and responsible for ensuring the TN3270, FTP, and mainframe socket applications are configured to use SSL/TLS security
• Implemented APPN connectivity.
• Provided technical support for several zLinux systems and a zVM system.

Confidential, Denver, Colorado

Senior Mainframe Network System Programmer

Responsibilities:

• Responsible for the configuration, analysis, troubleshooting and tuning of a multi-LPAR zOS Communications Server and zVM environment that utilized IBM FEPs, OSA cards and Cisco CIP router.
• Senior technical lead is designing and implementing a high availability and robust TN3270 infrastructure for users throughout the US using Cisco SNASW, Enterprise Extender, and Cisco CSS load balancers
• Installed and configured Cisco CSS load balancers for critical IP applications
• Senior technician responsible for the customization of zOS Communication Server and its components (VTAM, IP, TN3270, FTP, Resolver, and SNMP).
• Troubleshot network problems using Netview,GTF and packet traces, netstat commands, and IPCS dump analysis.
• Technical support for Connect:Direct, VPS, and IBM PCOMM
• Responsible for installing, upgrading and maintaining Cleverview for TCPIP andcTrace.

Confidential

System Programmer

Responsibilities:

• Contracted to do systems programming support particularly for the Y2K testing.
• Provided in-depth technical support of OS/390 system software and all sub-components.
• Implemented StorageTek’s mainframe Automated Cartridge System and Virtual Tape Sub-system.

Confidential, Colorado Springs, Colorado

Manager / Duty Manager NOC

Responsibilities:

• Supervised a NOC team of 20 analysts providing expert problem and incident management to ensure maximum service availability, functionality, and reliability on OS/390, UNIX, VMS, and Windows platforms.
• Responsible for making key decisions and technical expertise to manage and expedite restoration of mission critical applications while working with senior and executive management for timely and effective business decisions.

Senior Engineer / Senior Floor Manager

Confidential

Responsibilities:

• Supplied expert problem management skills to ensure maximum availability and reliability on 40+ OS390 mainframe systems.
• Responsible for guiding and instructing a team of 20 mainframe and mid-tier analysts in analyzing and resolving problems affecting critical business systems.

Senior Staff Specialist

Confidential

Responsibilities:

• Provided in-depth technical support and problem resolution of OS/390 operating systems and sub-components.

Confidential, Colorado Springs, Colorado

System Programmer

Responsibilities:

• Contacted to Confidential to provide in-depth system programming technical support of multiple OS/390 systems

Confidential, Colorado Springs, Colorado

Senior Engineer

Responsibilities:

• Provided in-depth problem analysis for Mission and Range Control Centers with the Air Force Satellite Control Network (AFSCN) on 6+ MVS systems and sub-components.

Confidential, Colorado Springs, Colorado

Satellite Operations Officer

Responsibilities:

• Directed a mission control team involved in satellite operations, including mission planning, commanding, telemetry analysis, satellite vehicle anomaly resolution or resolving ground system failures.